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the one where mikey finds out

Summary:

Fool Mikey once, shame on him. Fool her twice, shame on you. But fool her three times and he might just figure it out.
or
Casey and Donnie have been dating for a while in secret, but aren't as subtle as they think they are.
(teen rating is just because they curse lol)

Notes:

this whole fic was inspired by a specific scene from a specific show but im way too embarrassed to say it, so if you get it you get it
btw the first chapter is the only one that includes texting + the shortest ^^

(See the end of the work for more notes.)

Chapter Text

Angel !! 

> yo mike

> u alive?

 

the party dude

wassup angel!!!!!! <

Angel !!

> thank god im abt to scream i think

 

the party dude

NOO what happened girl1!!!?! <

 

Angel !!

> casey has a tutor over or smth but i think shes making them rethink their life choices rn

 

the party dude

cowabummer… <

are they loud?? <

 

Angel !!

> SUPER.
> MY WALLS R LIKE. PAPER THIN DUDE

> wait wtf was that

 

the party dude

oof. <

… <
angel? <

ANGEL ARE YOU STILL ALIVE?!?!?!?!?!?!!?!?! <
I DONT WANT MY LAST WORDS TO YOU TO BE OOF <

 

Angel !!

> OMFG CHILL OUT U WEIRDO!!!

> im fine loser

> …

> ily

 

the party dude

🧡🧡🧡 <

what happened tho???? <

 

Angel !!

> i think the tutor just slammed their face on the desk n left lol

> i didnt hear a door maybe they jumped /j

> casey sounds upset. those r her upset footsteps

> [ Angel !! sent an voice memo ]

 

the party dude

how do you know what that sounds like dude??? <

(Replying to Angel !! s voice memo) omg nooo shes stomping <

 

Angel !!

> casey does it a lot lol

 

the party dude

thats so real of her <

i hope shes ok though :(( <

Angel !!

> she will be dw

> im gonna do smth stupid to cheer her up
> ttyl mikey <3

the party dude

i oh i think dee just got home from the junkyard too!! <

bye angel!! cya1! <
tell casey i love her more than you dooooo <

Angel !!

[ read ]

 

Mikey looked up from her phone when Donnie entered the lair. He opened his mouth to greet his sibling when he noticed them grumbling under their breath and rubbing their forehead.

“You good, Dee?” She asked instead, earning a glare in response from the irritable turtle. “Woah, what happened at the dump, dude? Did you get into a fight with the trash? … Did the trash win?

“No, the trash didn’t win! ” Donnie snapped back, clenching their hands into fists at their sides. Mikey gasped at the dark bruise on their forehead that definitely hadn’t been there that morning.

Mikey hesitated before leaning towards Donnie. “But you aren’t denying there was a fight?”

Donnie let out a frustrated yell. They waved their hands around for a moment, as if struggling to collect their thoughts. “There was.. a mutant, okay? A really stupid mutant who is beyond help!” They scowled at the memory of something before shaking their head and making a start to their lab.

Mikey frowned, watching her sibling’s retreating shell for a moment before jumping after them. “Hold up, Dee!”

“Mikey,” They sighed, pausing to turn towards their younger brother, but were interrupted before they could continue.

“You okay?”

“What?” 

“Like- you aren’t hurt right? Cause like if you are, I’m totally telling Leo, and she’ll kill you or something.” He twirled her fingers, glancing away from Donnie’s bruised face. 

Sometimes trying to talk to her siblings was like walking through a minefield – especially when it came to talking about their feelings – so Mikey couldn’t help the nervousness bubbling within him.

However, instead of another short answer, Donnie’s face softened, and they pat Mikey’s head. “Yeah, yeah I’m okay. Just a little.. frazzled right now.”

Mikey nodded slowly, “So you’ll be alright?”

“I'll be alright. I just need some alone time for a bit, okay? Can you tell Leo and Raph that?”

Once again, the orange-clad turtle nodded dutifully. “On it! Feel better Dee!”

Mikey smiled when Donnie rubbed her head again before retreating into their lab. Per Donnie’s request, he popped into Raph’s room and the dojo respectively to warn the twins to leave their purple sibling alone for the time being (and also for Leo to get the fuck out of the dojo!!).

She plopped down onto her own bed afterwards, pulling out her phone, and – to his surprise! – seeing messages from Angel.

 

Angel !!

> yeesh. caseys in a real bad mood

> shes acting like she got broken up with lol

 

the party dude

yeah dons in a funk too :( <

 

Angel !!

> what? rlly?

 

the party dude

IDK! mutant ambush at the junkyard ig they didnt even bring home any trash <

had a huge bruise on their forehead too <

 

Angel !!

> thats weird

> maybe they didnt go to the dump

 

the party dude

???? <

 

Angel !!

> yk how i said i heard someone slam their head on the desk

> OMFG MIKEY LET ME FINISH MY THOUGHT

 

the party dude

SAY IT ALL IN ONE MESSAGE THEN <

but YEAH??? <

 

Angel !!
> id literally rather die

> just shut up for a sec

>  yk how i heard that noise. well it defo leaves a bruise

> and it wasnt casey. i was able to see her face when she screamed at me to gtfo

> …

> you can speak now michael

 

the party dude

so what? you saying donnie was at your place?? <

 

Angel !!
> idk maybe??

> but both our siblings r pissy. and it happened at the same time

> kinda sus…

the party dude

would don lie about that tho? its not like they havent fought before :/ <

besides! going to your place is normal now! i wouldve gone with! <

(we havent seen eachother in forever dude! we gotta get on that btw) <

 

Angel !!
> i guess

> ill grill casey on it tmrw when she doesnt wanna rip my face off

> and you can literally come whenever loser

> just ask and ill keep my window open

 

the party dude

oh shiiiit angel and mikey in the real?? <

 

Angel !!

> nvm ur dead to me /j

 

Mikey giggled, sending Angel a few heart emojis before setting her phone to charge on her nightstand.

He lay on his shell and stared at the ceiling, subconsciously mulling over Angel’s messages.

It wasn’t like her friend didn’t have a point – after she pointed it out, even Mikey had to admit it made sense – but it just felt so unnecessary. Donnie and Casey had made amends forever ago, and the turtles had been formally introduced to Angel months ago. There wasn’t a reason to lie about going to Casey’s apartment, or lie about what may or may not have happened at said apartment.

Mikey decided she wanted to trust her sibling. If something was really wrong, they would’ve said something. It was just a crazy coincidence, and crazier things have happened.

He sighed as he rolled onto her side, trying to power nap to just stop thinking .
Mikey pushed her head into her pillow when a voice a little too similar to a younger Raphs said something about ‘thinking? that must be a first for you ’.

After blocking out ‘Mind-Raph’ it was relatively easy to fall asleep.



The next morning Donnie came out in a much better mood, meeting Mikey (who was making breakfast) in the kitchen to brew a cup of coffee.

The younger turtle beamed at their older sibling, who returned a sweet gap-toothed smile.

“I’m glad things are better today, Dee!”

Donnie breathed a laugh out through their nose, pressing a button on the coffee machine to start the brewing. “Yeah.. me too.” They nodded once at Mikey before turning towards the machine again.

Mikey watched Donnie for a second longer before focusing on her bacon-and-eggs breakfast pizza once again.

He left his phone on his nightstand, and wouldn’t think to look for it until the day was near over, when Donnie’s weird behavior was long forgotten.

 

Angel !!

> nvm im choosing violence. im ripping caseys face off

>im so FUCING TIRED
> she was up ALL NIGHT calling someone